Check the connection on the starter. If it is loose that could contribute....however I am guessing the starter is failing and you will need to replace it. If you can get it out(not easy on the 3.2L) you can run a test on it by hooking up the + battery terminal and the - battery terminal to the apporpriate bolts. It should jumpt to life, but if it sticks, it is worn out and should be replaced.

'97 Rodeo
3.2L V6
DOR 3" lift, 3"BL, DOR Boulder Bars, Tera-Low's, 33x10.5,Surco Safari Rack, Cobra CB, Rancho 9000's....andnNow with Half-Doors for the summer